Explore the comprehensive measures taken to ensure radiation safety in a hospital setting with Dr Costa. He emphasizes the importance of continuous education, including yearly instruction on the ALARA (As Low As Reasonably Achievable) principle to manage exposure levels. In University Hospital Essen, nurses' exposure is kept significantly below legal limits, with less than 1 millisievert per year compared to the allowed 20 millisieverts. Patient release criteria are based on international guidelines, ensuring public exposure does not exceed 1 millisievert per year. The video details the management of radioactive waste, including the handling of primary and secondary waste from radiopharmaceuticals, and the bioelimination of radiopharmaceuticals through decay tanks. It also describes the process of measuring and documenting waste to ensure it meets exemption levels before disposal.